197800386 has 32 divisors (see below), whose sum is σ = 453178368. Its totient is φ = 56381520.

The previous prime is 197800381. The next prime is 197800397. The reversal of 197800386 is 683008791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (197800381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13291 + ... + 23921.

It is an arithmetic number, because the mean of its divisors is an integer number (14161824).

Almost surely, 2^197800386 is an apocalyptic number.

197800386 is an abundant number, since it is smaller than the sum of its proper divisors (255377982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197800386 is a wasteful number, since it uses less digits than its factorization.

197800386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11086.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 197800386 is about 14064.1525162379. The cubic root of 197800386 is about 582.6517362140.

The spelling of 197800386 in words is "one hundred ninety-seven million, eight hundred thousand, three hundred eighty-six".